What is matter? Anything that takes up space and has volume

States of Matter Solid Liquid Gas Plasma High temperature physical state of matter in which atoms lose their electrons Stars Electronic Devices Aircraft and Automobile engine parts

Physical vs Chemical Talking about matter . . . We can analyze matter by looking at two categories: Physical vs Chemical

Talking about matter . . . Physical

Property vs Change Physical A characteristic that can be observed or measured without changing the identity of the substance A characteristic that can be observed or measured when one substance changes into another state (solid, liquid or gas) but does not change its identity

Property vs Change Physical A characteristic that can be observed or measured without changing the identity of the substance Examples: Odor Shape Density Size Melting point Boiling point Color A characteristic that can be observed or measured when one substance changes into another state (solid, liquid or gas), but does not change its identity Examples: Cutting evaporating Melting condensation Boiling subliming Splitting deposition Cracking grinding Crushing breaking

Practice – Physical Property or Physical Change Rubbing alcohol evaporating Paper being cut in half The density of water is 1.00 g/mL Breaking a glass window with a baseball Diethyl ether has a boiling point of 34 °C Sucrose has a malt-like odor Dry ice subliming Gold has a melting point of 1,064 °C Sawing a piece of a fallen tree branch in half

Key Vocab. for Physical Observations Malleable – hammered or beaten into thin sheets Ductile – easily drawn into a wire Luster – metallic or shiny appearance Brittle – breaks easily, shatters

Compare and Contrast these 2 chemicals

Observations about two chemicals

Intensive Properties Does NOT depend on the amount of matter present AKA: Boiling point Density Melting point Conductivity If you can identify the substance as a result of this property then it is an intensive property!

Extensive Property Does depend on the amount of matter present AKA: Volume Mass Length

Intensive? or Extensive? ___________Shape ___________Density ___________Magnetism ___________Boiling Point ___________Height ___________Mass ___________Flame Color (used to tell what elements are present in chemical solutions) ___________pH (how acidic or basic something is) ___________Size